/*
 * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Simon Goldschmidt
 *
 */
#ifndef LWIP_HDR_LWIPOPTS_H__
#define LWIP_HDR_LWIPOPTS_H__

/* lwipopts.h包含了用户对协议栈内核的参数配置. 如果对某些选项未配置, lwip将使用opt.h中的默认值. */

/* Prevent having to link sys_arch.c (we don't test the API layers in unit tests) */
#define NO_SYS                          1 /* 无操作系统模拟层. */
#define LWIP_NETCONN                    0 /* 不编译 sequential API 的相关文件. */
#define LWIP_SOCKET                     0 /* 不编译 socket API的相关文件. */
//#define SYS_LIGHTWEIGHT_PROT            0

#if 0
#define LWIP_IPV6                       1
#define IPV6_FRAG_COPYHEADER            1
#define LWIP_IPV6_DUP_DETECT_ATTEMPTS   0

/* Enable some protocols to test them */
#define LWIP_DHCP                       1
#define LWIP_AUTOIP                     1

#define LWIP_IGMP                       1
#define LWIP_DNS                        1

#define LWIP_ALTCP                      1

/* Turn off checksum verification of fuzzed data */
#define CHECKSUM_CHECK_IP               0
#define CHECKSUM_CHECK_UDP              0
#define CHECKSUM_CHECK_TCP              0
#define CHECKSUM_CHECK_ICMP             0
#define CHECKSUM_CHECK_ICMP6            0
#endif

/* Minimal changes to opt.h required for tcp unit tests: */
#define MEM_ALIGNMENT                   4  /* 内存字节对齐方式. */
#define MEM_SIZE                        (1024*32) /* 定义内存堆大小. */

//#define TCP_SND_QUEUELEN                40
//#define MEMP_NUM_TCP_SEG                TCP_SND_QUEUELEN

#define TCP_MSS                         1000 /* TCP报文段的最大程度 */
//#define TCP_OVERSIZE                    1
#define TCP_SND_BUF                     (4 * TCP_MSS) /* 允许TCP协议使用的最大发送缓冲长度. */
//#define TCP_WND                         (10 * TCP_MSS)

//#define LWIP_WND_SCALE                  1
//#define TCP_RCV_SCALE                   2
//#define PBUF_POOL_SIZE                  400 /* pbuf tests need ~200KByte */

/* Minimal changes to opt.h required for etharp unit tests: */
//#define ETHARP_SUPPORT_STATIC_ENTRIES   1

//#define LWIP_NUM_NETIF_CLIENT_DATA      1
//#define LWIP_SNMP                       1
//#define MIB2_STATS                      1
//#define LWIP_MDNS_RESPONDER             1

#define ETHARP_DEBUG  LWIP_DBG_ON /* 允许程序打印ARP相关的信息. */
#define ICMP_DEBUG    LWIP_DBG_ON /* 允许程序打印ICMP相关的信息. */

/* 日志打印级别.
 * 0x00 - LWIP_DBG_LEVEL_ALL     , 打印所有日志
 * 0x01 - LWIP_DBG_LEVEL_WARNING , 警告级别, 如校验和失败, 丢包等等
 * 0x02 - LWIP_DBG_LEVEL_SERIOUS , 严重级别, 如内存分配失败
 * 0x03 - LWIP_DBG_LEVEL_SEVERE  , 致命级别, 内核发生不可恢复的错误
 */
#define LWIP_DBG_MIN_LEVEL      LWIP_DBG_LEVEL_ALL

/* 启用回环测试通信接口. */
#define LWIP_HAVE_LOOPIF      1

#endif /* LWIP_HDR_LWIPOPTS_H__ */
